None of these are required. The mod uses them if you have them.
When you start your shift you have to be female, if you're not they give you a Basic at the start of your shift for a price of course. Once you start your shift you have to deliver a number of packages before you're done. Most are ordinary, but some customers want some special treatment in order to get their signature and a nice tip! How often that happens depends on your rank and the route you pick.
Routes. From Courier up you choose where you run each shift. Maple Grove suburbs is quiet and polite with fewer surprises and generous tips, the Standard route is the usual mix, and the Docks district is a rougher crowd with far more special deliveries and the biggest tips.
Regulars. Satisfy a customer properly and he may start watching for your van. Regulars remember you, start warmer, tip better, and notice when you wear something new for them. They stay on the route where you met them, and the depot lists them by name.
Familiar faces. Some doorsteps have somebody you know behind them. Bruce takes deliveries and is exactly what you would expect. Dredd signs for club supplies at his penthouse. Your stepdad pays for your discretion. Hailey signs for her components with earnest courier etiquette. Vince takes delivery of studio equipment.
Sticky fingers. Sometimes a parcel from the X-Change Pharmacy rattles. Deliver it honestly for a discretion bonus, peek inside, or keep it and pocket a pill. If the customer complains, the claim comes out of your pay at sign-out.
Achievements. Twelve of them, nine visible and three hidden.
The base pay starts at $250 plus tips. Tips are given based on how satisfied the customer is with your special treatment, multiplied by your rank and your route, and their satisfaction is also how you get promoted:
Trainee - base - $250/day, tips x1
Courier - 5 satisfied customers - $325/day, tips x1.25, and you pick your own route
Senior Courier - 12 satisfied customers - $400/day, tips x1.5, and a bigger bag means more doors
Route Captain - 20 satisfied customers - $475/day, tips x1.75, and regulars start asking for you by name
Lead Driver - 30 satisfied customers - $550/day, tips x2
X-Press Elite - 45 satisfied customers - $650/day, tips x2.5
Higher ranks also carry more packages per shift and get knocked on more often.
Base game 0.25 or newer. Nothing else required.
Have Fun!